#1
Which bones form the wrist joint?
Radius, ulna, and carpals
ExplanationThe wrist joint is formed by the articulation of the radius, ulna, and the carpal bones.
#2
What is the main function of the carpal bones?
To provide stability
ExplanationCarpal bones primarily function to provide stability to the wrist joint.
#3
Which of the following bones is NOT part of the wrist joint?
Cuneiform
ExplanationThe cuneiform bone is not part of the wrist joint.
#4
What is the name of the joint between the trapezium and the first metacarpal bone?
Carpometacarpal joint
ExplanationThe joint between the trapezium and the first metacarpal bone is called the carpometacarpal joint.
#5
Which ligament forms the floor of the carpal tunnel?
Transverse carpal ligament
ExplanationThe transverse carpal ligament forms the floor of the carpal tunnel.
#6
Which ligament stabilizes the wrist joint on the palmar side?
Palmar radiocarpal ligament
ExplanationThe Palmar radiocarpal ligament is responsible for stabilizing the wrist joint on the palmar side.
#7
What is the primary movement performed by the radiocarpal joint?
Flexion and extension
ExplanationThe radiocarpal joint primarily allows for flexion and extension movements of the wrist.
#8
Which nerve innervates the muscles responsible for wrist extension?
Radial nerve
ExplanationThe radial nerve innervates the muscles responsible for wrist extension.
#9
What is the main action of the flexor digitorum superficialis muscle?
Flexion of the fingers
ExplanationThe main action of the flexor digitorum superficialis muscle is the flexion of the fingers.
#10
What is the main function of the extensor retinaculum?
To stabilize the extensor tendons
ExplanationThe main function of the extensor retinaculum is to stabilize the extensor tendons.
#11
Which muscle is primarily responsible for thumb opposition?
Opponens pollicis
ExplanationThe Opponens pollicis muscle is primarily responsible for thumb opposition.
#12
Which carpal bone articulates with both the radius and the ulna?
Lunate
ExplanationThe lunate bone articulates with both the radius and ulna.
#13
What is the function of the pisiform bone?
To aid in thumb opposition
ExplanationThe pisiform bone functions to aid in thumb opposition.
#14
Which muscle is primarily responsible for wrist flexion?
Flexor carpi radialis
ExplanationThe flexor carpi radialis muscle is primarily responsible for wrist flexion.
#15
Which muscle is primarily responsible for finger abduction?
Abductor digiti minimi
ExplanationThe abductor digiti minimi muscle is primarily responsible for finger abduction.